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The rationale is to determine (in individuals with limited perceived bimodal benefit) whether the CROS device may be a better solution for obtaining two-sided input. If yes, this study would be practice-changing.
It is well accepted that bilateral input can significantly improve speech understanding in noise for patients with cochlear implants. For cochlear implant (CI) recipients who have a CI on only one side, two sided input can be provided with simultaneous use of a hearing aid (HA) or a CROS device on the opposite side. The decision about which device to use depends on the level of residual hearing a recipient has in non CI-implanted ear, and more specifically what level of useable residual hearing s/he has. Access to useable low frequency hearing can not only improve speech understanding in noise, it can also improve sound quality, pitch perception and music perception.
Clinicians can reasonably predict that a recipient with hearing thresholds better than 60 dB HL at low frequencies (below 750 Hz) would benefit from amplification. For recipients with no measurable acoustic hearing in the contralateral ear, CROS would be a reasonable option, especially if bilateral implantation is not feasible or desired. However, it is more difficult to predict the appropriate device in individuals who have some measurable acoustic hearing but may be receiving limited benefit from it. This can be especially challenging because audiometric thresholds are not a reliable predictor of bimodal benefit. Additionally, acoustic hearing can provide subjective benefits which could hold different intrinsic value or significance for different individuals depending on their life style and listening needs.
Naida Hearing Aid, Naida Contralateral Routing of Sound Device
The Ottawa Hospital
ON - Ontario
Not yet recruiting
Ottawa Hospital Research Institute
Published on BioPortfolio: 2019-11-12T18:25:33-0500
The objective is to investigate the new Naida CROS device in adult recipients including chronic phases and to generate some preliminary pre-launch data. The formal study objectives are to...
Speech understanding in noise remains the greatest challenge for people using cochlear implants, particularly when the speech of interest comes from the side of the head opposite to the im...
Spatial hearing in cochlear implant (CI) users is a challenging investigation field since no studies have explored yet spatial auditory perception in three-dimensional space (3D). Moreover...
The purpose of this investigation is to demonstrate the safety and effectiveness of MED‐EL cochlear implants in children 7 months to 5 years, 11 months of age who fall outside the curren...
Bilateral profound sensorineural hearing loss (PSNHL) is often treated with Cochlear Implants. The majority of bilaterally deafened patients, however, often only receive a unilateral cochl...
Many bilaterally deaf adults are only able to receive one cochlear implant (CI), resulting in suboptimal listening performance, especially in challenging listening environments. Adding a contralateral...
A cochlear implant is a small electronic device that provides a sense of sound for the user, which can be used unilaterally or bilaterally. Although there is advocacy for the benefits of binaural hear...
Previous studies have proven the effectiveness of bilateral cochlear implantation compared to unilateral cochlear implantation. In many of these studies the unilateral hearing situation was simulated ...
Cochlear implantation (CI) is an effective treatment option for patients with severe-to-profound hearing loss. When CI first started, it was recommended to wait until at least 4 weeks after the CI sur...
It has been suggested that children with higher degree of hearing loss may show more severe externalizing (e.g., aggression) and internalizing (e.g., depression and anxiety) behavioral problems compar...
Surgical insertion of an electronic hearing device (COCHLEAR IMPLANTS) with electrodes to the COCHLEAR NERVE in the inner ear to create sound sensation in patients with residual nerve fibers.
Electronic hearing devices typically used for patients with normal outer and middle ear function, but defective inner ear function. In the COCHLEA, the hair cells (HAIR CELLS, VESTIBULAR) may be absent or damaged but there are residual nerve fibers. The device electrically stimulates the COCHLEAR NERVE to create sound sensation.
Multi-channel hearing devices typically used for patients who have tumors on the COCHLEAR NERVE and are unable to benefit from COCHLEAR IMPLANTS after tumor surgery that severs the cochlear nerve. The device electrically stimulates the nerves of cochlea nucleus in the BRAIN STEM rather than the inner ear as in cochlear implants.
The cochlear part of the 8th cranial nerve (VESTIBULOCOCHLEAR NERVE). The cochlear nerve fibers originate from neurons of the SPIRAL GANGLION and project peripherally to cochlear hair cells and centrally to the cochlear nuclei (COCHLEAR NUCLEUS) of the BRAIN STEM. They mediate the sense of hearing.
Hearing loss due to disease of the AUDITORY PATHWAYS (in the CENTRAL NERVOUS SYSTEM) which originate in the COCHLEAR NUCLEI of the PONS and then ascend bilaterally to the MIDBRAIN, the THALAMUS, and then the AUDITORY CORTEX in the TEMPORAL LOBE. Bilateral lesions of the auditory pathways are usually required to cause central hearing loss. Cortical deafness refers to loss of hearing due to bilateral auditory cortex lesions. Unilateral BRAIN STEM lesions involving the cochlear nuclei may result in unilateral hearing loss.
Hearing, auditory perception, or audition is the ability to perceive sound by detecting vibrations, changes in the pressure of the surrounding medium through time, through an organ such as the ear. Sound may be heard through solid, liquid, or gaseous mat...